1 /*- 2 * Copyright (c) 2000, 2001 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/ctype.h> 37 #include <sys/ioccom.h> 38 #include <sys/stat.h> 39 40 #include <machine/bus_memio.h> 41 #include <machine/bus.h> 42 #include <machine/resource.h> 43 #include <sys/rman.h> 44 45 #include <cam/cam.h> 46 #include <cam/cam_ccb.h> 47 #include <cam/cam_periph.h> 48 #include <cam/cam_sim.h> 49 #include <cam/cam_xpt_sim.h> 50 #include <cam/scsi/scsi_all.h> 51 #include <cam/scsi/scsi_message.h> 52 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcivar.h> 55 56 #include <dev/mly/mlyreg.h> 57 #include <dev/mly/mlyio.h> 58 #include <dev/mly/mlyvar.h> 59 #include <dev/mly/mly_tables.h> 60 61 static int mly_probe(device_t dev); 62 static int mly_attach(device_t dev); 63 static int mly_pci_attach(struct mly_softc *sc); 64 static int mly_detach(device_t dev); 65 static int mly_shutdown(device_t dev); 66 static void mly_intr(void *arg); 67 68 static int mly_sg_map(struct mly_softc *sc); 69 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 70 static int mly_mmbox_map(struct mly_softc *sc); 71 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 72 static void mly_free(struct mly_softc *sc); 73 74 static int mly_get_controllerinfo(struct mly_softc *sc); 75 static void mly_scan_devices(struct mly_softc *sc); 76 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 77 static void mly_complete_rescan(struct mly_command *mc); 78 static int mly_get_eventstatus(struct mly_softc *sc); 79 static int mly_enable_mmbox(struct mly_softc *sc); 80 static int mly_flush(struct mly_softc *sc); 81 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 82 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 83 static void mly_check_event(struct mly_softc *sc); 84 static void mly_fetch_event(struct mly_softc *sc); 85 static void mly_complete_event(struct mly_command *mc); 86 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 87 static void mly_periodic(void *data); 88 89 static int mly_immediate_command(struct mly_command *mc); 90 static int mly_start(struct mly_command *mc); 91 static void mly_done(struct mly_softc *sc); 92 static void mly_complete(void *context, int pending); 93 94 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 95 static void mly_release_command(struct mly_command *mc); 96 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 97 static int mly_alloc_commands(struct mly_softc *sc); 98 static void mly_release_commands(struct mly_softc *sc); 99 static void mly_map_command(struct mly_command *mc); 100 static void mly_unmap_command(struct mly_command *mc); 101 102 static int mly_cam_attach(struct mly_softc *sc); 103 static void mly_cam_detach(struct mly_softc *sc); 104 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 105 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 106 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 107 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 108 static void mly_cam_poll(struct cam_sim *sim); 109 static void mly_cam_complete(struct mly_command *mc); 110 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 111 static int mly_name_device(struct mly_softc *sc, int bus, int target); 112 113 static int mly_fwhandshake(struct mly_softc *sc); 114 115 static void mly_describe_controller(struct mly_softc *sc); 116 #ifdef MLY_DEBUG 117 static void mly_printstate(struct mly_softc *sc); 118 static void mly_print_command(struct mly_command *mc); 119 static void mly_print_packet(struct mly_command *mc); 120 static void mly_panic(struct mly_softc *sc, char *reason); 121 #endif 122 void mly_print_controller(int controller); 123 static int mly_timeout(struct mly_softc *sc); 124 125 126 static d_open_t mly_user_open; 127 static d_close_t mly_user_close; 128 static d_ioctl_t mly_user_ioctl; 129 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 130 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 131 132 #define MLY_CMD_TIMEOUT 20 133 134 static device_method_t mly_methods[] = { 135 /* Device interface */ 136 DEVMETHOD(device_probe, mly_probe), 137 DEVMETHOD(device_attach, mly_attach), 138 DEVMETHOD(device_detach, mly_detach), 139 DEVMETHOD(device_shutdown, mly_shutdown), 140 { 0, 0 } 141 }; 142 143 static driver_t mly_pci_driver = { 144 "mly", 145 mly_methods, 146 sizeof(struct mly_softc) 147 }; 148 149 static devclass_t mly_devclass; 150 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 151 152 static struct cdevsw mly_cdevsw = { 153 .d_version = D_VERSION, 154 .d_flags = D_NEEDGIANT, 155 .d_open = mly_user_open, 156 .d_close = mly_user_close, 157 .d_ioctl = mly_user_ioctl, 158 .d_name = "mly", 159 }; 160 161 /******************************************************************************** 162 ******************************************************************************** 163 Device Interface 164 ******************************************************************************** 165 ********************************************************************************/ 166 167 static struct mly_ident 168 { 169 u_int16_t vendor; 170 u_int16_t device; 171 u_int16_t subvendor; 172 u_int16_t subdevice; 173 int hwif; 174 char *desc; 175 } mly_identifiers[] = { 176 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 177 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 178 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 179 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 180 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 181 {0, 0, 0, 0, 0, 0} 182 }; 183 184 /******************************************************************************** 185 * Compare the provided PCI device with the list we support. 186 */ 187 static int 188 mly_probe(device_t dev) 189 { 190 struct mly_ident *m; 191 192 debug_called(1); 193 194 for (m = mly_identifiers; m->vendor != 0; m++) { 195 if ((m->vendor == pci_get_vendor(dev)) && 196 (m->device == pci_get_device(dev)) && 197 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 198 (m->subdevice == pci_get_subdevice(dev))))) { 199 200 device_set_desc(dev, m->desc); 201 #ifdef MLY_MODULE 202 return(-5); 203 #else 204 return(-10); /* allow room to be overridden */ 205 #endif 206 } 207 } 208 return(ENXIO); 209 } 210 211 /******************************************************************************** 212 * Initialise the controller and softc 213 */ 214 static int 215 mly_attach(device_t dev) 216 { 217 struct mly_softc *sc = device_get_softc(dev); 218 int error; 219 220 debug_called(1); 221 222 sc->mly_dev = dev; 223 224 #ifdef MLY_DEBUG 225 if (device_get_unit(sc->mly_dev) == 0) 226 mly_softc0 = sc; 227 #endif 228 229 /* 230 * Do PCI-specific initialisation. 231 */ 232 if ((error = mly_pci_attach(sc)) != 0) 233 goto out; 234 235 /* 236 * Initialise per-controller queues. 237 */ 238 mly_initq_free(sc); 239 mly_initq_busy(sc); 240 mly_initq_complete(sc); 241 242 #if __FreeBSD_version >= 500005 243 /* 244 * Initialise command-completion task. 245 */ 246 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 247 #endif 248 249 /* disable interrupts before we start talking to the controller */ 250 MLY_MASK_INTERRUPTS(sc); 251 252 /* 253 * Wait for the controller to come ready, handshake with the firmware if required. 254 * This is typically only necessary on platforms where the controller BIOS does not 255 * run. 256 */ 257 if ((error = mly_fwhandshake(sc))) 258 goto out; 259 260 /* 261 * Allocate initial command buffers. 262 */ 263 if ((error = mly_alloc_commands(sc))) 264 goto out; 265 266 /* 267 * Obtain controller feature information 268 */ 269 if ((error = mly_get_controllerinfo(sc))) 270 goto out; 271 272 /* 273 * Reallocate command buffers now we know how many we want. 274 */ 275 mly_release_commands(sc); 276 if ((error = mly_alloc_commands(sc))) 277 goto out; 278 279 /* 280 * Get the current event counter for health purposes, populate the initial 281 * health status buffer. 282 */ 283 if ((error = mly_get_eventstatus(sc))) 284 goto out; 285 286 /* 287 * Enable memory-mailbox mode. 288 */ 289 if ((error = mly_enable_mmbox(sc))) 290 goto out; 291 292 /* 293 * Attach to CAM. 294 */ 295 if ((error = mly_cam_attach(sc))) 296 goto out; 297 298 /* 299 * Print a little information about the controller 300 */ 301 mly_describe_controller(sc); 302 303 /* 304 * Mark all attached devices for rescan. 305 */ 306 mly_scan_devices(sc); 307 308 /* 309 * Instigate the first status poll immediately. Rescan completions won't 310 * happen until interrupts are enabled, which should still be before 311 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 312 */ 313 mly_periodic((void *)sc); 314 315 /* 316 * Create the control device. 317 */ 318 sc->mly_dev_t = make_dev(&mly_cdevsw, device_get_unit(sc->mly_dev), UID_ROOT, GID_OPERATOR, 319 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev)); 320 sc->mly_dev_t->si_drv1 = sc; 321 322 /* enable interrupts now */ 323 MLY_UNMASK_INTERRUPTS(sc); 324 325 #ifdef MLY_DEBUG 326 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz); 327 #endif 328 329 out: 330 if (error != 0) 331 mly_free(sc); 332 return(error); 333 } 334 335 /******************************************************************************** 336 * Perform PCI-specific initialisation. 337 */ 338 static int 339 mly_pci_attach(struct mly_softc *sc) 340 { 341 int i, error; 342 u_int32_t command; 343 344 debug_called(1); 345 346 /* assume failure is 'not configured' */ 347 error = ENXIO; 348 349 /* 350 * Verify that the adapter is correctly set up in PCI space. 351 * 352 * XXX we shouldn't do this; the PCI code should. 353 */ 354 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 355 command |= PCIM_CMD_BUSMASTEREN; 356 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 357 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 358 if (!(command & PCIM_CMD_BUSMASTEREN)) { 359 mly_printf(sc, "can't enable busmaster feature\n"); 360 goto fail; 361 } 362 if ((command & PCIM_CMD_MEMEN) == 0) { 363 mly_printf(sc, "memory window not available\n"); 364 goto fail; 365 } 366 367 /* 368 * Allocate the PCI register window. 369 */ 370 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 371 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 372 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 373 mly_printf(sc, "can't allocate register window\n"); 374 goto fail; 375 } 376 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 377 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 378 379 /* 380 * Allocate and connect our interrupt. 381 */ 382 sc->mly_irq_rid = 0; 383 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 384 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 385 mly_printf(sc, "can't allocate interrupt\n"); 386 goto fail; 387 } 388 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY, mly_intr, sc, &sc->mly_intr)) { 389 mly_printf(sc, "can't set up interrupt\n"); 390 goto fail; 391 } 392 393 /* assume failure is 'out of memory' */ 394 error = ENOMEM; 395 396 /* 397 * Allocate the parent bus DMA tag appropriate for our PCI interface. 398 * 399 * Note that all of these controllers are 64-bit capable. 400 */ 401 if (bus_dma_tag_create(NULL, /* parent */ 402 1, 0, /* alignment, boundary */ 403 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 404 BUS_SPACE_MAXADDR, /* highaddr */ 405 NULL, NULL, /* filter, filterarg */ 406 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 407 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 408 BUS_DMA_ALLOCNOW, /* flags */ 409 NULL, /* lockfunc */ 410 NULL, /* lockarg */ 411 &sc->mly_parent_dmat)) { 412 mly_printf(sc, "can't allocate parent DMA tag\n"); 413 goto fail; 414 } 415 416 /* 417 * Create DMA tag for mapping buffers into controller-addressable space. 418 */ 419 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 420 1, 0, /* alignment, boundary */ 421 BUS_SPACE_MAXADDR, /* lowaddr */ 422 BUS_SPACE_MAXADDR, /* highaddr */ 423 NULL, NULL, /* filter, filterarg */ 424 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 425 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 426 0, /* flags */ 427 busdma_lock_mutex, /* lockfunc */ 428 &Giant, /* lockarg */ 429 &sc->mly_buffer_dmat)) { 430 mly_printf(sc, "can't allocate buffer DMA tag\n"); 431 goto fail; 432 } 433 434 /* 435 * Initialise the DMA tag for command packets. 436 */ 437 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 438 1, 0, /* alignment, boundary */ 439 BUS_SPACE_MAXADDR, /* lowaddr */ 440 BUS_SPACE_MAXADDR, /* highaddr */ 441 NULL, NULL, /* filter, filterarg */ 442 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 443 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 444 BUS_DMA_ALLOCNOW, /* flags */ 445 NULL, NULL, /* lockfunc, lockarg */ 446 &sc->mly_packet_dmat)) { 447 mly_printf(sc, "can't allocate command packet DMA tag\n"); 448 goto fail; 449 } 450 451 /* 452 * Detect the hardware interface version 453 */ 454 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 455 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 456 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 457 sc->mly_hwif = mly_identifiers[i].hwif; 458 switch(sc->mly_hwif) { 459 case MLY_HWIF_I960RX: 460 debug(1, "set hardware up for i960RX"); 461 sc->mly_doorbell_true = 0x00; 462 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 463 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 464 sc->mly_idbr = MLY_I960RX_IDBR; 465 sc->mly_odbr = MLY_I960RX_ODBR; 466 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 467 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 468 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 469 break; 470 case MLY_HWIF_STRONGARM: 471 debug(1, "set hardware up for StrongARM"); 472 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 473 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 474 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 475 sc->mly_idbr = MLY_STRONGARM_IDBR; 476 sc->mly_odbr = MLY_STRONGARM_ODBR; 477 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 478 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 479 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 480 break; 481 } 482 break; 483 } 484 } 485 486 /* 487 * Create the scatter/gather mappings. 488 */ 489 if ((error = mly_sg_map(sc))) 490 goto fail; 491 492 /* 493 * Allocate and map the memory mailbox 494 */ 495 if ((error = mly_mmbox_map(sc))) 496 goto fail; 497 498 error = 0; 499 500 fail: 501 return(error); 502 } 503 504 /******************************************************************************** 505 * Shut the controller down and detach all our resources. 506 */ 507 static int 508 mly_detach(device_t dev) 509 { 510 int error; 511 512 if ((error = mly_shutdown(dev)) != 0) 513 return(error); 514 515 mly_free(device_get_softc(dev)); 516 return(0); 517 } 518 519 /******************************************************************************** 520 * Bring the controller to a state where it can be safely left alone. 521 * 522 * Note that it should not be necessary to wait for any outstanding commands, 523 * as they should be completed prior to calling here. 524 * 525 * XXX this applies for I/O, but not status polls; we should beware of 526 * the case where a status command is running while we detach. 527 */ 528 static int 529 mly_shutdown(device_t dev) 530 { 531 struct mly_softc *sc = device_get_softc(dev); 532 533 debug_called(1); 534 535 if (sc->mly_state & MLY_STATE_OPEN) 536 return(EBUSY); 537 538 /* kill the periodic event */ 539 untimeout(mly_periodic, sc, sc->mly_periodic); 540 541 /* flush controller */ 542 mly_printf(sc, "flushing cache..."); 543 printf("%s\n", mly_flush(sc) ? "failed" : "done"); 544 545 MLY_MASK_INTERRUPTS(sc); 546 547 return(0); 548 } 549 550 /******************************************************************************* 551 * Take an interrupt, or be poked by other code to look for interrupt-worthy 552 * status. 553 */ 554 static void 555 mly_intr(void *arg) 556 { 557 struct mly_softc *sc = (struct mly_softc *)arg; 558 559 debug_called(2); 560 561 mly_done(sc); 562 }; 563 564 /******************************************************************************** 565 ******************************************************************************** 566 Bus-dependant Resource Management 567 ******************************************************************************** 568 ********************************************************************************/ 569 570 /******************************************************************************** 571 * Allocate memory for the scatter/gather tables 572 */ 573 static int 574 mly_sg_map(struct mly_softc *sc) 575 { 576 size_t segsize; 577 578 debug_called(1); 579 580 /* 581 * Create a single tag describing a region large enough to hold all of 582 * the s/g lists we will need. 583 */ 584 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 585 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 586 1, 0, /* alignment,boundary */ 587 BUS_SPACE_MAXADDR, /* lowaddr */ 588 BUS_SPACE_MAXADDR, /* highaddr */ 589 NULL, NULL, /* filter, filterarg */ 590 segsize, 1, /* maxsize, nsegments */ 591 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 592 BUS_DMA_ALLOCNOW, /* flags */ 593 NULL, NULL, /* lockfunc, lockarg */ 594 &sc->mly_sg_dmat)) { 595 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 596 return(ENOMEM); 597 } 598 599 /* 600 * Allocate enough s/g maps for all commands and permanently map them into 601 * controller-visible space. 602 * 603 * XXX this assumes we can get enough space for all the s/g maps in one 604 * contiguous slab. 605 */ 606 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 607 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 608 mly_printf(sc, "can't allocate s/g table\n"); 609 return(ENOMEM); 610 } 611 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 612 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 613 return (ENOMEM); 614 return(0); 615 } 616 617 /******************************************************************************** 618 * Save the physical address of the base of the s/g table. 619 */ 620 static void 621 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 622 { 623 struct mly_softc *sc = (struct mly_softc *)arg; 624 625 debug_called(1); 626 627 /* save base of s/g table's address in bus space */ 628 sc->mly_sg_busaddr = segs->ds_addr; 629 } 630 631 /******************************************************************************** 632 * Allocate memory for the memory-mailbox interface 633 */ 634 static int 635 mly_mmbox_map(struct mly_softc *sc) 636 { 637 638 /* 639 * Create a DMA tag for a single contiguous region large enough for the 640 * memory mailbox structure. 641 */ 642 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 643 1, 0, /* alignment,boundary */ 644 BUS_SPACE_MAXADDR, /* lowaddr */ 645 BUS_SPACE_MAXADDR, /* highaddr */ 646 NULL, NULL, /* filter, filterarg */ 647 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 648 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 649 BUS_DMA_ALLOCNOW, /* flags */ 650 NULL, NULL, /* lockfunc, lockarg */ 651 &sc->mly_mmbox_dmat)) { 652 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 653 return(ENOMEM); 654 } 655 656 /* 657 * Allocate the buffer 658 */ 659 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 660 mly_printf(sc, "can't allocate memory mailbox\n"); 661 return(ENOMEM); 662 } 663 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 664 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 665 BUS_DMA_NOWAIT) != 0) 666 return (ENOMEM); 667 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 668 return(0); 669 670 } 671 672 /******************************************************************************** 673 * Save the physical address of the memory mailbox 674 */ 675 static void 676 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 677 { 678 struct mly_softc *sc = (struct mly_softc *)arg; 679 680 debug_called(1); 681 682 sc->mly_mmbox_busaddr = segs->ds_addr; 683 } 684 685 /******************************************************************************** 686 * Free all of the resources associated with (sc) 687 * 688 * Should not be called if the controller is active. 689 */ 690 static void 691 mly_free(struct mly_softc *sc) 692 { 693 694 debug_called(1); 695 696 /* Remove the management device */ 697 destroy_dev(sc->mly_dev_t); 698 699 /* detach from CAM */ 700 mly_cam_detach(sc); 701 702 /* release command memory */ 703 mly_release_commands(sc); 704 705 /* throw away the controllerinfo structure */ 706 if (sc->mly_controllerinfo != NULL) 707 free(sc->mly_controllerinfo, M_DEVBUF); 708 709 /* throw away the controllerparam structure */ 710 if (sc->mly_controllerparam != NULL) 711 free(sc->mly_controllerparam, M_DEVBUF); 712 713 /* destroy data-transfer DMA tag */ 714 if (sc->mly_buffer_dmat) 715 bus_dma_tag_destroy(sc->mly_buffer_dmat); 716 717 /* free and destroy DMA memory and tag for s/g lists */ 718 if (sc->mly_sg_table) { 719 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 720 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 721 } 722 if (sc->mly_sg_dmat) 723 bus_dma_tag_destroy(sc->mly_sg_dmat); 724 725 /* free and destroy DMA memory and tag for memory mailbox */ 726 if (sc->mly_mmbox) { 727 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 728 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 729 } 730 if (sc->mly_mmbox_dmat) 731 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 732 733 /* disconnect the interrupt handler */ 734 if (sc->mly_intr) 735 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 736 if (sc->mly_irq != NULL) 737 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 738 739 /* destroy the parent DMA tag */ 740 if (sc->mly_parent_dmat) 741 bus_dma_tag_destroy(sc->mly_parent_dmat); 742 743 /* release the register window mapping */ 744 if (sc->mly_regs_resource != NULL) 745 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 746 } 747 748 /******************************************************************************** 749 ******************************************************************************** 750 Command Wrappers 751 ******************************************************************************** 752 ********************************************************************************/ 753 754 /******************************************************************************** 755 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 756 */ 757 static int 758 mly_get_controllerinfo(struct mly_softc *sc) 759 { 760 struct mly_command_ioctl mci; 761 u_int8_t status; 762 int error; 763 764 debug_called(1); 765 766 if (sc->mly_controllerinfo != NULL) 767 free(sc->mly_controllerinfo, M_DEVBUF); 768 769 /* build the getcontrollerinfo ioctl and send it */ 770 bzero(&mci, sizeof(mci)); 771 sc->mly_controllerinfo = NULL; 772 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 773 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 774 &status, NULL, NULL))) 775 return(error); 776 if (status != 0) 777 return(EIO); 778 779 if (sc->mly_controllerparam != NULL) 780 free(sc->mly_controllerparam, M_DEVBUF); 781 782 /* build the getcontrollerparameter ioctl and send it */ 783 bzero(&mci, sizeof(mci)); 784 sc->mly_controllerparam = NULL; 785 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 786 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 787 &status, NULL, NULL))) 788 return(error); 789 if (status != 0) 790 return(EIO); 791 792 return(0); 793 } 794 795 /******************************************************************************** 796 * Schedule all possible devices for a rescan. 797 * 798 */ 799 static void 800 mly_scan_devices(struct mly_softc *sc) 801 { 802 int bus, target; 803 804 debug_called(1); 805 806 /* 807 * Clear any previous BTL information. 808 */ 809 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 810 811 /* 812 * Mark all devices as requiring a rescan, and let the next 813 * periodic scan collect them. 814 */ 815 for (bus = 0; bus < sc->mly_cam_channels; bus++) 816 if (MLY_BUS_IS_VALID(sc, bus)) 817 for (target = 0; target < MLY_MAX_TARGETS; target++) 818 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 819 820 } 821 822 /******************************************************************************** 823 * Rescan a device, possibly as a consequence of getting an event which suggests 824 * that it may have changed. 825 * 826 * If we suffer resource starvation, we can abandon the rescan as we'll be 827 * retried. 828 */ 829 static void 830 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 831 { 832 struct mly_command *mc; 833 struct mly_command_ioctl *mci; 834 835 debug_called(1); 836 837 /* check that this bus is valid */ 838 if (!MLY_BUS_IS_VALID(sc, bus)) 839 return; 840 841 /* get a command */ 842 if (mly_alloc_command(sc, &mc)) 843 return; 844 845 /* set up the data buffer */ 846 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 847 mly_release_command(mc); 848 return; 849 } 850 mc->mc_flags |= MLY_CMD_DATAIN; 851 mc->mc_complete = mly_complete_rescan; 852 853 /* 854 * Build the ioctl. 855 */ 856 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 857 mci->opcode = MDACMD_IOCTL; 858 mci->addr.phys.controller = 0; 859 mci->timeout.value = 30; 860 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 861 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 862 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 863 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 864 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 865 debug(1, "logical device %d", mci->addr.log.logdev); 866 } else { 867 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 868 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 869 mci->addr.phys.lun = 0; 870 mci->addr.phys.target = target; 871 mci->addr.phys.channel = bus; 872 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 873 } 874 875 /* 876 * Dispatch the command. If we successfully send the command, clear the rescan 877 * bit. 878 */ 879 if (mly_start(mc) != 0) { 880 mly_release_command(mc); 881 } else { 882 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 883 } 884 } 885 886 /******************************************************************************** 887 * Handle the completion of a rescan operation 888 */ 889 static void 890 mly_complete_rescan(struct mly_command *mc) 891 { 892 struct mly_softc *sc = mc->mc_sc; 893 struct mly_ioctl_getlogdevinfovalid *ldi; 894 struct mly_ioctl_getphysdevinfovalid *pdi; 895 struct mly_command_ioctl *mci; 896 struct mly_btl btl, *btlp; 897 int bus, target, rescan; 898 899 debug_called(1); 900 901 /* 902 * Recover the bus and target from the command. We need these even in 903 * the case where we don't have a useful response. 904 */ 905 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 906 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 907 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 908 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 909 } else { 910 bus = mci->addr.phys.channel; 911 target = mci->addr.phys.target; 912 } 913 /* XXX validate bus/target? */ 914 915 /* the default result is 'no device' */ 916 bzero(&btl, sizeof(btl)); 917 918 /* if the rescan completed OK, we have possibly-new BTL data */ 919 if (mc->mc_status == 0) { 920 if (mc->mc_length == sizeof(*ldi)) { 921 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 922 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 923 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 924 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 925 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 926 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 927 /* XXX what can we do about this? */ 928 } 929 btl.mb_flags = MLY_BTL_LOGICAL; 930 btl.mb_type = ldi->raid_level; 931 btl.mb_state = ldi->state; 932 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 933 mly_describe_code(mly_table_device_type, ldi->raid_level), 934 mly_describe_code(mly_table_device_state, ldi->state)); 935 } else if (mc->mc_length == sizeof(*pdi)) { 936 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 937 if ((pdi->channel != bus) || (pdi->target != target)) { 938 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 939 bus, target, pdi->channel, pdi->target); 940 /* XXX what can we do about this? */ 941 } 942 btl.mb_flags = MLY_BTL_PHYSICAL; 943 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 944 btl.mb_state = pdi->state; 945 btl.mb_speed = pdi->speed; 946 btl.mb_width = pdi->width; 947 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 948 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 949 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 950 mly_describe_code(mly_table_device_state, pdi->state)); 951 } else { 952 mly_printf(sc, "BTL rescan result invalid\n"); 953 } 954 } 955 956 free(mc->mc_data, M_DEVBUF); 957 mly_release_command(mc); 958 959 /* 960 * Decide whether we need to rescan the device. 961 */ 962 rescan = 0; 963 964 /* device type changes (usually between 'nothing' and 'something') */ 965 btlp = &sc->mly_btl[bus][target]; 966 if (btl.mb_flags != btlp->mb_flags) { 967 debug(1, "flags changed, rescanning"); 968 rescan = 1; 969 } 970 971 /* XXX other reasons? */ 972 973 /* 974 * Update BTL information. 975 */ 976 *btlp = btl; 977 978 /* 979 * Perform CAM rescan if required. 980 */ 981 if (rescan) 982 mly_cam_rescan_btl(sc, bus, target); 983 } 984 985 /******************************************************************************** 986 * Get the current health status and set the 'next event' counter to suit. 987 */ 988 static int 989 mly_get_eventstatus(struct mly_softc *sc) 990 { 991 struct mly_command_ioctl mci; 992 struct mly_health_status *mh; 993 u_int8_t status; 994 int error; 995 996 /* build the gethealthstatus ioctl and send it */ 997 bzero(&mci, sizeof(mci)); 998 mh = NULL; 999 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 1000 1001 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 1002 return(error); 1003 if (status != 0) 1004 return(EIO); 1005 1006 /* get the event counter */ 1007 sc->mly_event_change = mh->change_counter; 1008 sc->mly_event_waiting = mh->next_event; 1009 sc->mly_event_counter = mh->next_event; 1010 1011 /* save the health status into the memory mailbox */ 1012 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1013 1014 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1015 1016 free(mh, M_DEVBUF); 1017 return(0); 1018 } 1019 1020 /******************************************************************************** 1021 * Enable the memory mailbox mode. 1022 */ 1023 static int 1024 mly_enable_mmbox(struct mly_softc *sc) 1025 { 1026 struct mly_command_ioctl mci; 1027 u_int8_t *sp, status; 1028 int error; 1029 1030 debug_called(1); 1031 1032 /* build the ioctl and send it */ 1033 bzero(&mci, sizeof(mci)); 1034 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1035 /* set buffer addresses */ 1036 mci.param.setmemorymailbox.command_mailbox_physaddr = 1037 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1038 mci.param.setmemorymailbox.status_mailbox_physaddr = 1039 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1040 mci.param.setmemorymailbox.health_buffer_physaddr = 1041 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1042 1043 /* set buffer sizes - abuse of data_size field is revolting */ 1044 sp = (u_int8_t *)&mci.data_size; 1045 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1046 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1047 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1048 1049 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1050 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1051 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1052 mci.param.setmemorymailbox.health_buffer_physaddr, 1053 mci.param.setmemorymailbox.health_buffer_size); 1054 1055 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1056 return(error); 1057 if (status != 0) 1058 return(EIO); 1059 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1060 debug(1, "memory mailbox active"); 1061 return(0); 1062 } 1063 1064 /******************************************************************************** 1065 * Flush all pending I/O from the controller. 1066 */ 1067 static int 1068 mly_flush(struct mly_softc *sc) 1069 { 1070 struct mly_command_ioctl mci; 1071 u_int8_t status; 1072 int error; 1073 1074 debug_called(1); 1075 1076 /* build the ioctl */ 1077 bzero(&mci, sizeof(mci)); 1078 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1079 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1080 1081 /* pass it off to the controller */ 1082 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1083 return(error); 1084 1085 return((status == 0) ? 0 : EIO); 1086 } 1087 1088 /******************************************************************************** 1089 * Perform an ioctl command. 1090 * 1091 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1092 * the command requires data transfer from the controller, and we will allocate 1093 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1094 * to the controller. 1095 * 1096 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1097 * 1098 * XXX we don't even try to handle the case where datasize > 4k. We should. 1099 */ 1100 static int 1101 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1102 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1103 { 1104 struct mly_command *mc; 1105 struct mly_command_ioctl *mci; 1106 int error; 1107 1108 debug_called(1); 1109 1110 mc = NULL; 1111 if (mly_alloc_command(sc, &mc)) { 1112 error = ENOMEM; 1113 goto out; 1114 } 1115 1116 /* copy the ioctl structure, but save some important fields and then fixup */ 1117 mci = &mc->mc_packet->ioctl; 1118 ioctl->sense_buffer_address = mci->sense_buffer_address; 1119 ioctl->maximum_sense_size = mci->maximum_sense_size; 1120 *mci = *ioctl; 1121 mci->opcode = MDACMD_IOCTL; 1122 mci->timeout.value = 30; 1123 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1124 1125 /* handle the data buffer */ 1126 if (data != NULL) { 1127 if (*data == NULL) { 1128 /* allocate data buffer */ 1129 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) { 1130 error = ENOMEM; 1131 goto out; 1132 } 1133 mc->mc_flags |= MLY_CMD_DATAIN; 1134 } else { 1135 mc->mc_data = *data; 1136 mc->mc_flags |= MLY_CMD_DATAOUT; 1137 } 1138 mc->mc_length = datasize; 1139 mc->mc_packet->generic.data_size = datasize; 1140 } 1141 1142 /* run the command */ 1143 if ((error = mly_immediate_command(mc))) 1144 goto out; 1145 1146 /* clean up and return any data */ 1147 *status = mc->mc_status; 1148 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1149 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1150 *sense_length = mc->mc_sense; 1151 goto out; 1152 } 1153 1154 /* should we return a data pointer? */ 1155 if ((data != NULL) && (*data == NULL)) 1156 *data = mc->mc_data; 1157 1158 /* command completed OK */ 1159 error = 0; 1160 1161 out: 1162 if (mc != NULL) { 1163 /* do we need to free a data buffer we allocated? */ 1164 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1165 free(mc->mc_data, M_DEVBUF); 1166 mly_release_command(mc); 1167 } 1168 return(error); 1169 } 1170 1171 /******************************************************************************** 1172 * Check for event(s) outstanding in the controller. 1173 */ 1174 static void 1175 mly_check_event(struct mly_softc *sc) 1176 { 1177 1178 /* 1179 * The controller may have updated the health status information, 1180 * so check for it here. Note that the counters are all in host memory, 1181 * so this check is very cheap. Also note that we depend on checking on 1182 * completion 1183 */ 1184 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1185 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1186 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1187 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1188 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1189 1190 /* wake up anyone that might be interested in this */ 1191 wakeup(&sc->mly_event_change); 1192 } 1193 if (sc->mly_event_counter != sc->mly_event_waiting) 1194 mly_fetch_event(sc); 1195 } 1196 1197 /******************************************************************************** 1198 * Fetch one event from the controller. 1199 * 1200 * If we fail due to resource starvation, we'll be retried the next time a 1201 * command completes. 1202 */ 1203 static void 1204 mly_fetch_event(struct mly_softc *sc) 1205 { 1206 struct mly_command *mc; 1207 struct mly_command_ioctl *mci; 1208 int s; 1209 u_int32_t event; 1210 1211 debug_called(1); 1212 1213 /* get a command */ 1214 if (mly_alloc_command(sc, &mc)) 1215 return; 1216 1217 /* set up the data buffer */ 1218 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 1219 mly_release_command(mc); 1220 return; 1221 } 1222 mc->mc_length = sizeof(struct mly_event); 1223 mc->mc_flags |= MLY_CMD_DATAIN; 1224 mc->mc_complete = mly_complete_event; 1225 1226 /* 1227 * Get an event number to fetch. It's possible that we've raced with another 1228 * context for the last event, in which case there will be no more events. 1229 */ 1230 s = splcam(); 1231 if (sc->mly_event_counter == sc->mly_event_waiting) { 1232 mly_release_command(mc); 1233 splx(s); 1234 return; 1235 } 1236 event = sc->mly_event_counter++; 1237 splx(s); 1238 1239 /* 1240 * Build the ioctl. 1241 * 1242 * At this point we are committed to sending this request, as it 1243 * will be the only one constructed for this particular event number. 1244 */ 1245 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1246 mci->opcode = MDACMD_IOCTL; 1247 mci->data_size = sizeof(struct mly_event); 1248 mci->addr.phys.lun = (event >> 16) & 0xff; 1249 mci->addr.phys.target = (event >> 24) & 0xff; 1250 mci->addr.phys.channel = 0; 1251 mci->addr.phys.controller = 0; 1252 mci->timeout.value = 30; 1253 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1254 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1255 mci->param.getevent.sequence_number_low = event & 0xffff; 1256 1257 debug(1, "fetch event %u", event); 1258 1259 /* 1260 * Submit the command. 1261 * 1262 * Note that failure of mly_start() will result in this event never being 1263 * fetched. 1264 */ 1265 if (mly_start(mc) != 0) { 1266 mly_printf(sc, "couldn't fetch event %u\n", event); 1267 mly_release_command(mc); 1268 } 1269 } 1270 1271 /******************************************************************************** 1272 * Handle the completion of an event poll. 1273 */ 1274 static void 1275 mly_complete_event(struct mly_command *mc) 1276 { 1277 struct mly_softc *sc = mc->mc_sc; 1278 struct mly_event *me = (struct mly_event *)mc->mc_data; 1279 1280 debug_called(1); 1281 1282 /* 1283 * If the event was successfully fetched, process it. 1284 */ 1285 if (mc->mc_status == SCSI_STATUS_OK) { 1286 mly_process_event(sc, me); 1287 free(me, M_DEVBUF); 1288 } 1289 mly_release_command(mc); 1290 1291 /* 1292 * Check for another event. 1293 */ 1294 mly_check_event(sc); 1295 } 1296 1297 /******************************************************************************** 1298 * Process a controller event. 1299 */ 1300 static void 1301 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1302 { 1303 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1304 char *fp, *tp; 1305 int bus, target, event, class, action; 1306 1307 /* 1308 * Errors can be reported using vendor-unique sense data. In this case, the 1309 * event code will be 0x1c (Request sense data present), the sense key will 1310 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1311 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1312 * and low seven bits of the ASC (low seven bits of the high byte). 1313 */ 1314 if ((me->code == 0x1c) && 1315 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1316 (ssd->add_sense_code & 0x80)) { 1317 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1318 } else { 1319 event = me->code; 1320 } 1321 1322 /* look up event, get codes */ 1323 fp = mly_describe_code(mly_table_event, event); 1324 1325 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1326 1327 /* quiet event? */ 1328 class = fp[0]; 1329 if (isupper(class) && bootverbose) 1330 class = tolower(class); 1331 1332 /* get action code, text string */ 1333 action = fp[1]; 1334 tp = &fp[2]; 1335 1336 /* 1337 * Print some information about the event. 1338 * 1339 * This code uses a table derived from the corresponding portion of the Linux 1340 * driver, and thus the parser is very similar. 1341 */ 1342 switch(class) { 1343 case 'p': /* error on physical device */ 1344 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1345 if (action == 'r') 1346 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1347 break; 1348 case 'l': /* error on logical unit */ 1349 case 'm': /* message about logical unit */ 1350 bus = MLY_LOGDEV_BUS(sc, me->lun); 1351 target = MLY_LOGDEV_TARGET(sc, me->lun); 1352 mly_name_device(sc, bus, target); 1353 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1354 if (action == 'r') 1355 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1356 break; 1357 break; 1358 case 's': /* report of sense data */ 1359 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1360 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1361 (ssd->add_sense_code == 0x04) && 1362 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1363 break; /* ignore NO_SENSE or NOT_READY in one case */ 1364 1365 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1366 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1367 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1368 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1369 if (action == 'r') 1370 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1371 break; 1372 case 'e': 1373 mly_printf(sc, tp, me->target, me->lun); 1374 printf("\n"); 1375 break; 1376 case 'c': 1377 mly_printf(sc, "controller %s\n", tp); 1378 break; 1379 case '?': 1380 mly_printf(sc, "%s - %d\n", tp, me->code); 1381 break; 1382 default: /* probably a 'noisy' event being ignored */ 1383 break; 1384 } 1385 } 1386 1387 /******************************************************************************** 1388 * Perform periodic activities. 1389 */ 1390 static void 1391 mly_periodic(void *data) 1392 { 1393 struct mly_softc *sc = (struct mly_softc *)data; 1394 int bus, target; 1395 1396 debug_called(2); 1397 1398 /* 1399 * Scan devices. 1400 */ 1401 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1402 if (MLY_BUS_IS_VALID(sc, bus)) { 1403 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1404 1405 /* ignore the controller in this scan */ 1406 if (target == sc->mly_controllerparam->initiator_id) 1407 continue; 1408 1409 /* perform device rescan? */ 1410 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1411 mly_rescan_btl(sc, bus, target); 1412 } 1413 } 1414 } 1415 1416 /* check for controller events */ 1417 mly_check_event(sc); 1418 1419 /* reschedule ourselves */ 1420 sc->mly_periodic = timeout(mly_periodic, sc, MLY_PERIODIC_INTERVAL * hz); 1421 } 1422 1423 /******************************************************************************** 1424 ******************************************************************************** 1425 Command Processing 1426 ******************************************************************************** 1427 ********************************************************************************/ 1428 1429 /******************************************************************************** 1430 * Run a command and wait for it to complete. 1431 * 1432 */ 1433 static int 1434 mly_immediate_command(struct mly_command *mc) 1435 { 1436 struct mly_softc *sc = mc->mc_sc; 1437 int error, s; 1438 1439 debug_called(1); 1440 1441 /* spinning at splcam is ugly, but we're only used during controller init */ 1442 s = splcam(); 1443 if ((error = mly_start(mc))) { 1444 splx(s); 1445 return(error); 1446 } 1447 1448 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1449 /* sleep on the command */ 1450 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1451 tsleep(mc, PRIBIO, "mlywait", 0); 1452 } 1453 } else { 1454 /* spin and collect status while we do */ 1455 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1456 mly_done(mc->mc_sc); 1457 } 1458 } 1459 splx(s); 1460 return(0); 1461 } 1462 1463 /******************************************************************************** 1464 * Deliver a command to the controller. 1465 * 1466 * XXX it would be good to just queue commands that we can't submit immediately 1467 * and send them later, but we probably want a wrapper for that so that 1468 * we don't hang on a failed submission for an immediate command. 1469 */ 1470 static int 1471 mly_start(struct mly_command *mc) 1472 { 1473 struct mly_softc *sc = mc->mc_sc; 1474 union mly_command_packet *pkt; 1475 int s; 1476 1477 debug_called(2); 1478 1479 /* 1480 * Set the command up for delivery to the controller. 1481 */ 1482 mly_map_command(mc); 1483 mc->mc_packet->generic.command_id = mc->mc_slot; 1484 1485 #ifdef MLY_DEBUG 1486 mc->mc_timestamp = time_second; 1487 #endif 1488 1489 s = splcam(); 1490 1491 /* 1492 * Do we have to use the hardware mailbox? 1493 */ 1494 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1495 /* 1496 * Check to see if the controller is ready for us. 1497 */ 1498 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1499 splx(s); 1500 return(EBUSY); 1501 } 1502 mc->mc_flags |= MLY_CMD_BUSY; 1503 1504 /* 1505 * It's ready, send the command. 1506 */ 1507 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1508 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1509 1510 } else { /* use memory-mailbox mode */ 1511 1512 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1513 1514 /* check to see if the next index is free yet */ 1515 if (pkt->mmbox.flag != 0) { 1516 splx(s); 1517 return(EBUSY); 1518 } 1519 mc->mc_flags |= MLY_CMD_BUSY; 1520 1521 /* copy in new command */ 1522 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1523 /* barrier to ensure completion of previous write before we write the flag */ 1524 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1525 BUS_SPACE_BARRIER_WRITE); 1526 /* copy flag last */ 1527 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1528 /* barrier to ensure completion of previous write before we notify the controller */ 1529 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1530 BUS_SPACE_BARRIER_WRITE); 1531 1532 /* signal controller, update index */ 1533 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1534 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1535 } 1536 1537 mly_enqueue_busy(mc); 1538 splx(s); 1539 return(0); 1540 } 1541 1542 /******************************************************************************** 1543 * Pick up command status from the controller, schedule a completion event 1544 */ 1545 static void 1546 mly_done(struct mly_softc *sc) 1547 { 1548 struct mly_command *mc; 1549 union mly_status_packet *sp; 1550 u_int16_t slot; 1551 int s, worked; 1552 1553 s = splcam(); 1554 worked = 0; 1555 1556 /* pick up hardware-mailbox commands */ 1557 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1558 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1559 if (slot < MLY_SLOT_MAX) { 1560 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1561 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1562 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1563 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1564 mly_remove_busy(mc); 1565 mc->mc_flags &= ~MLY_CMD_BUSY; 1566 mly_enqueue_complete(mc); 1567 worked = 1; 1568 } else { 1569 /* slot 0xffff may mean "extremely bogus command" */ 1570 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1571 } 1572 /* unconditionally acknowledge status */ 1573 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1574 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1575 } 1576 1577 /* pick up memory-mailbox commands */ 1578 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1579 for (;;) { 1580 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1581 1582 /* check for more status */ 1583 if (sp->mmbox.flag == 0) 1584 break; 1585 1586 /* get slot number */ 1587 slot = sp->status.command_id; 1588 if (slot < MLY_SLOT_MAX) { 1589 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1590 mc->mc_status = sp->status.status; 1591 mc->mc_sense = sp->status.sense_length; 1592 mc->mc_resid = sp->status.residue; 1593 mly_remove_busy(mc); 1594 mc->mc_flags &= ~MLY_CMD_BUSY; 1595 mly_enqueue_complete(mc); 1596 worked = 1; 1597 } else { 1598 /* slot 0xffff may mean "extremely bogus command" */ 1599 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1600 slot, sc->mly_mmbox_status_index); 1601 } 1602 1603 /* clear and move to next index */ 1604 sp->mmbox.flag = 0; 1605 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1606 } 1607 /* acknowledge that we have collected status value(s) */ 1608 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1609 } 1610 1611 splx(s); 1612 if (worked) { 1613 #if __FreeBSD_version >= 500005 1614 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1615 taskqueue_enqueue(taskqueue_swi_giant, &sc->mly_task_complete); 1616 else 1617 #endif 1618 mly_complete(sc, 0); 1619 } 1620 } 1621 1622 /******************************************************************************** 1623 * Process completed commands 1624 */ 1625 static void 1626 mly_complete(void *context, int pending) 1627 { 1628 struct mly_softc *sc = (struct mly_softc *)context; 1629 struct mly_command *mc; 1630 void (* mc_complete)(struct mly_command *mc); 1631 1632 1633 debug_called(2); 1634 1635 /* 1636 * Spin pulling commands off the completed queue and processing them. 1637 */ 1638 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1639 1640 /* 1641 * Free controller resources, mark command complete. 1642 * 1643 * Note that as soon as we mark the command complete, it may be freed 1644 * out from under us, so we need to save the mc_complete field in 1645 * order to later avoid dereferencing mc. (We would not expect to 1646 * have a polling/sleeping consumer with mc_complete != NULL). 1647 */ 1648 mly_unmap_command(mc); 1649 mc_complete = mc->mc_complete; 1650 mc->mc_flags |= MLY_CMD_COMPLETE; 1651 1652 /* 1653 * Call completion handler or wake up sleeping consumer. 1654 */ 1655 if (mc_complete != NULL) { 1656 mc_complete(mc); 1657 } else { 1658 wakeup(mc); 1659 } 1660 } 1661 1662 /* 1663 * XXX if we are deferring commands due to controller-busy status, we should 1664 * retry submitting them here. 1665 */ 1666 } 1667 1668 /******************************************************************************** 1669 ******************************************************************************** 1670 Command Buffer Management 1671 ******************************************************************************** 1672 ********************************************************************************/ 1673 1674 /******************************************************************************** 1675 * Allocate a command. 1676 */ 1677 static int 1678 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1679 { 1680 struct mly_command *mc; 1681 1682 debug_called(3); 1683 1684 if ((mc = mly_dequeue_free(sc)) == NULL) 1685 return(ENOMEM); 1686 1687 *mcp = mc; 1688 return(0); 1689 } 1690 1691 /******************************************************************************** 1692 * Release a command back to the freelist. 1693 */ 1694 static void 1695 mly_release_command(struct mly_command *mc) 1696 { 1697 debug_called(3); 1698 1699 /* 1700 * Fill in parts of the command that may cause confusion if 1701 * a consumer doesn't when we are later allocated. 1702 */ 1703 mc->mc_data = NULL; 1704 mc->mc_flags = 0; 1705 mc->mc_complete = NULL; 1706 mc->mc_private = NULL; 1707 1708 /* 1709 * By default, we set up to overwrite the command packet with 1710 * sense information. 1711 */ 1712 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1713 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1714 1715 mly_enqueue_free(mc); 1716 } 1717 1718 /******************************************************************************** 1719 * Map helper for command allocation. 1720 */ 1721 static void 1722 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1723 { 1724 struct mly_softc *sc = (struct mly_softc *)arg; 1725 1726 debug_called(1); 1727 1728 sc->mly_packetphys = segs[0].ds_addr; 1729 } 1730 1731 /******************************************************************************** 1732 * Allocate and initialise command and packet structures. 1733 * 1734 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1735 * allocation to that number. If we don't yet know how many commands the 1736 * controller supports, allocate a very small set (suitable for initialisation 1737 * purposes only). 1738 */ 1739 static int 1740 mly_alloc_commands(struct mly_softc *sc) 1741 { 1742 struct mly_command *mc; 1743 int i, ncmd; 1744 1745 if (sc->mly_controllerinfo == NULL) { 1746 ncmd = 4; 1747 } else { 1748 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1749 } 1750 1751 /* 1752 * Allocate enough space for all the command packets in one chunk and 1753 * map them permanently into controller-visible space. 1754 */ 1755 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1756 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1757 return(ENOMEM); 1758 } 1759 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1760 ncmd * sizeof(union mly_command_packet), 1761 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1762 return (ENOMEM); 1763 1764 for (i = 0; i < ncmd; i++) { 1765 mc = &sc->mly_command[i]; 1766 bzero(mc, sizeof(*mc)); 1767 mc->mc_sc = sc; 1768 mc->mc_slot = MLY_SLOT_START + i; 1769 mc->mc_packet = sc->mly_packet + i; 1770 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1771 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1772 mly_release_command(mc); 1773 } 1774 return(0); 1775 } 1776 1777 /******************************************************************************** 1778 * Free all the storage held by commands. 1779 * 1780 * Must be called with all commands on the free list. 1781 */ 1782 static void 1783 mly_release_commands(struct mly_softc *sc) 1784 { 1785 struct mly_command *mc; 1786 1787 /* throw away command buffer DMA maps */ 1788 while (mly_alloc_command(sc, &mc) == 0) 1789 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1790 1791 /* release the packet storage */ 1792 if (sc->mly_packet != NULL) { 1793 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1794 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1795 sc->mly_packet = NULL; 1796 } 1797 } 1798 1799 1800 /******************************************************************************** 1801 * Command-mapping helper function - populate this command's s/g table 1802 * with the s/g entries for its data. 1803 */ 1804 static void 1805 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1806 { 1807 struct mly_command *mc = (struct mly_command *)arg; 1808 struct mly_softc *sc = mc->mc_sc; 1809 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1810 struct mly_sg_entry *sg; 1811 int i, tabofs; 1812 1813 debug_called(2); 1814 1815 /* can we use the transfer structure directly? */ 1816 if (nseg <= 2) { 1817 sg = &gen->transfer.direct.sg[0]; 1818 gen->command_control.extended_sg_table = 0; 1819 } else { 1820 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1821 sg = sc->mly_sg_table + tabofs; 1822 gen->transfer.indirect.entries[0] = nseg; 1823 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1824 gen->command_control.extended_sg_table = 1; 1825 } 1826 1827 /* copy the s/g table */ 1828 for (i = 0; i < nseg; i++) { 1829 sg[i].physaddr = segs[i].ds_addr; 1830 sg[i].length = segs[i].ds_len; 1831 } 1832 1833 } 1834 1835 #if 0 1836 /******************************************************************************** 1837 * Command-mapping helper function - save the cdb's physical address. 1838 * 1839 * We don't support 'large' SCSI commands at this time, so this is unused. 1840 */ 1841 static void 1842 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1843 { 1844 struct mly_command *mc = (struct mly_command *)arg; 1845 1846 debug_called(2); 1847 1848 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1849 if ((segs[0].ds_addr % PAGE_SIZE) > 1850 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1851 panic("cdb crosses page boundary"); 1852 1853 /* fix up fields in the command packet */ 1854 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1855 } 1856 #endif 1857 1858 /******************************************************************************** 1859 * Map a command into controller-visible space 1860 */ 1861 static void 1862 mly_map_command(struct mly_command *mc) 1863 { 1864 struct mly_softc *sc = mc->mc_sc; 1865 1866 debug_called(2); 1867 1868 /* don't map more than once */ 1869 if (mc->mc_flags & MLY_CMD_MAPPED) 1870 return; 1871 1872 /* does the command have a data buffer? */ 1873 if (mc->mc_data != NULL) { 1874 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1875 mly_map_command_sg, mc, 0); 1876 1877 if (mc->mc_flags & MLY_CMD_DATAIN) 1878 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1879 if (mc->mc_flags & MLY_CMD_DATAOUT) 1880 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1881 } 1882 mc->mc_flags |= MLY_CMD_MAPPED; 1883 } 1884 1885 /******************************************************************************** 1886 * Unmap a command from controller-visible space 1887 */ 1888 static void 1889 mly_unmap_command(struct mly_command *mc) 1890 { 1891 struct mly_softc *sc = mc->mc_sc; 1892 1893 debug_called(2); 1894 1895 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1896 return; 1897 1898 /* does the command have a data buffer? */ 1899 if (mc->mc_data != NULL) { 1900 if (mc->mc_flags & MLY_CMD_DATAIN) 1901 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1902 if (mc->mc_flags & MLY_CMD_DATAOUT) 1903 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1904 1905 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1906 } 1907 mc->mc_flags &= ~MLY_CMD_MAPPED; 1908 } 1909 1910 1911 /******************************************************************************** 1912 ******************************************************************************** 1913 CAM interface 1914 ******************************************************************************** 1915 ********************************************************************************/ 1916 1917 /******************************************************************************** 1918 * Attach the physical and virtual SCSI busses to CAM. 1919 * 1920 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1921 * than the highest physical bus. Physical busses are only registered if 1922 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1923 * 1924 * When we refer to a "bus", we are referring to the bus number registered with 1925 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1926 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1927 * interchangeably. 1928 */ 1929 static int 1930 mly_cam_attach(struct mly_softc *sc) 1931 { 1932 struct cam_devq *devq; 1933 int chn, i; 1934 1935 debug_called(1); 1936 1937 /* 1938 * Allocate a devq for all our channels combined. 1939 */ 1940 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1941 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1942 return(ENOMEM); 1943 } 1944 1945 /* 1946 * If physical channel registration has been requested, register these first. 1947 * Note that we enable tagged command queueing for physical channels. 1948 */ 1949 if (testenv("hw.mly.register_physical_channels")) { 1950 chn = 0; 1951 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1952 1953 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1954 device_get_unit(sc->mly_dev), 1955 sc->mly_controllerinfo->maximum_parallel_commands, 1956 1, devq)) == NULL) { 1957 return(ENOMEM); 1958 } 1959 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1960 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1961 return(ENXIO); 1962 } 1963 debug(1, "registered physical channel %d", chn); 1964 } 1965 } 1966 1967 /* 1968 * Register our virtual channels, with bus numbers matching channel numbers. 1969 */ 1970 chn = sc->mly_controllerinfo->physical_channels_present; 1971 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1972 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1973 device_get_unit(sc->mly_dev), 1974 sc->mly_controllerinfo->maximum_parallel_commands, 1975 0, devq)) == NULL) { 1976 return(ENOMEM); 1977 } 1978 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1979 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1980 return(ENXIO); 1981 } 1982 debug(1, "registered virtual channel %d", chn); 1983 } 1984 1985 /* 1986 * This is the total number of channels that (might have been) registered with 1987 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1988 */ 1989 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1990 sc->mly_controllerinfo->virtual_channels_present; 1991 1992 return(0); 1993 } 1994 1995 /******************************************************************************** 1996 * Detach from CAM 1997 */ 1998 static void 1999 mly_cam_detach(struct mly_softc *sc) 2000 { 2001 int i; 2002 2003 debug_called(1); 2004 2005 for (i = 0; i < sc->mly_cam_channels; i++) { 2006 if (sc->mly_cam_sim[i] != NULL) { 2007 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 2008 cam_sim_free(sc->mly_cam_sim[i], 0); 2009 } 2010 } 2011 if (sc->mly_cam_devq != NULL) 2012 cam_simq_free(sc->mly_cam_devq); 2013 } 2014 2015 /************************************************************************ 2016 * Rescan a device. 2017 */ 2018 static void 2019 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2020 { 2021 union ccb *ccb; 2022 2023 debug_called(1); 2024 2025 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 2026 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2027 return; 2028 } 2029 2030 if (xpt_create_path(&sc->mly_cam_path, xpt_periph, 2031 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2032 mly_printf(sc, "rescan failed (can't create path)\n"); 2033 free(ccb, M_TEMP); 2034 return; 2035 } 2036 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/); 2037 ccb->ccb_h.func_code = XPT_SCAN_LUN; 2038 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback; 2039 ccb->crcn.flags = CAM_FLAG_NONE; 2040 debug(1, "rescan target %d:%d", bus, target); 2041 xpt_action(ccb); 2042 } 2043 2044 static void 2045 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2046 { 2047 free(ccb, M_TEMP); 2048 } 2049 2050 /******************************************************************************** 2051 * Handle an action requested by CAM 2052 */ 2053 static void 2054 mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2055 { 2056 struct mly_softc *sc = cam_sim_softc(sim); 2057 2058 debug_called(2); 2059 2060 switch (ccb->ccb_h.func_code) { 2061 2062 /* perform SCSI I/O */ 2063 case XPT_SCSI_IO: 2064 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2065 return; 2066 break; 2067 2068 /* perform geometry calculations */ 2069 case XPT_CALC_GEOMETRY: 2070 { 2071 struct ccb_calc_geometry *ccg = &ccb->ccg; 2072 u_int32_t secs_per_cylinder; 2073 2074 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2075 2076 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2077 ccg->heads = 255; 2078 ccg->secs_per_track = 63; 2079 } else { /* MLY_BIOSGEOM_2G */ 2080 ccg->heads = 128; 2081 ccg->secs_per_track = 32; 2082 } 2083 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2084 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2085 ccb->ccb_h.status = CAM_REQ_CMP; 2086 break; 2087 } 2088 2089 /* handle path attribute inquiry */ 2090 case XPT_PATH_INQ: 2091 { 2092 struct ccb_pathinq *cpi = &ccb->cpi; 2093 2094 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2095 2096 cpi->version_num = 1; 2097 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2098 cpi->target_sprt = 0; 2099 cpi->hba_misc = 0; 2100 cpi->max_target = MLY_MAX_TARGETS - 1; 2101 cpi->max_lun = MLY_MAX_LUNS - 1; 2102 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2103 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2104 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 2105 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2106 cpi->unit_number = cam_sim_unit(sim); 2107 cpi->bus_id = cam_sim_bus(sim); 2108 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2109 ccb->ccb_h.status = CAM_REQ_CMP; 2110 break; 2111 } 2112 2113 case XPT_GET_TRAN_SETTINGS: 2114 { 2115 struct ccb_trans_settings *cts = &ccb->cts; 2116 int bus, target; 2117 2118 bus = cam_sim_bus(sim); 2119 target = cts->ccb_h.target_id; 2120 /* XXX validate bus/target? */ 2121 2122 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2123 cts->valid = 0; 2124 2125 /* logical device? */ 2126 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2127 /* nothing special for these */ 2128 2129 /* physical device? */ 2130 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2131 /* allow CAM to try tagged transactions */ 2132 cts->flags |= CCB_TRANS_TAG_ENB; 2133 cts->valid |= CCB_TRANS_TQ_VALID; 2134 2135 /* convert speed (MHz) to usec */ 2136 if (sc->mly_btl[bus][target].mb_speed == 0) { 2137 cts->sync_period = 1000000 / 5; 2138 } else { 2139 cts->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2140 } 2141 2142 /* convert bus width to CAM internal encoding */ 2143 switch (sc->mly_btl[bus][target].mb_width) { 2144 case 32: 2145 cts->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2146 break; 2147 case 16: 2148 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2149 break; 2150 case 8: 2151 default: 2152 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2153 break; 2154 } 2155 cts->valid |= CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_BUS_WIDTH_VALID; 2156 2157 /* not a device, bail out */ 2158 } else { 2159 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2160 break; 2161 } 2162 2163 /* disconnect always OK */ 2164 cts->flags |= CCB_TRANS_DISC_ENB; 2165 cts->valid |= CCB_TRANS_DISC_VALID; 2166 2167 cts->ccb_h.status = CAM_REQ_CMP; 2168 break; 2169 } 2170 2171 default: /* we can't do this */ 2172 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2173 ccb->ccb_h.status = CAM_REQ_INVALID; 2174 break; 2175 } 2176 2177 xpt_done(ccb); 2178 } 2179 2180 /******************************************************************************** 2181 * Handle an I/O operation requested by CAM 2182 */ 2183 static int 2184 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2185 { 2186 struct mly_softc *sc = cam_sim_softc(sim); 2187 struct mly_command *mc; 2188 struct mly_command_scsi_small *ss; 2189 int bus, target; 2190 int error; 2191 int s; 2192 2193 bus = cam_sim_bus(sim); 2194 target = csio->ccb_h.target_id; 2195 2196 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2197 2198 /* validate bus number */ 2199 if (!MLY_BUS_IS_VALID(sc, bus)) { 2200 debug(0, " invalid bus %d", bus); 2201 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2202 } 2203 2204 /* check for I/O attempt to a protected device */ 2205 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2206 debug(2, " device protected"); 2207 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2208 } 2209 2210 /* check for I/O attempt to nonexistent device */ 2211 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2212 debug(2, " device %d:%d does not exist", bus, target); 2213 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2214 } 2215 2216 /* XXX increase if/when we support large SCSI commands */ 2217 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2218 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2219 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2220 } 2221 2222 /* check that the CDB pointer is not to a physical address */ 2223 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2224 debug(0, " CDB pointer is to physical address"); 2225 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2226 } 2227 2228 /* if there is data transfer, it must be to/from a virtual address */ 2229 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2230 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2231 debug(0, " data pointer is to physical address"); 2232 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2233 } 2234 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2235 debug(0, " data has premature s/g setup"); 2236 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2237 } 2238 } 2239 2240 /* abandon aborted ccbs or those that have failed validation */ 2241 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2242 debug(2, "abandoning CCB due to abort/validation failure"); 2243 return(EINVAL); 2244 } 2245 2246 /* 2247 * Get a command, or push the ccb back to CAM and freeze the queue. 2248 */ 2249 if ((error = mly_alloc_command(sc, &mc))) { 2250 s = splcam(); 2251 xpt_freeze_simq(sim, 1); 2252 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2253 sc->mly_qfrzn_cnt++; 2254 splx(s); 2255 return(error); 2256 } 2257 2258 /* build the command */ 2259 mc->mc_data = csio->data_ptr; 2260 mc->mc_length = csio->dxfer_len; 2261 mc->mc_complete = mly_cam_complete; 2262 mc->mc_private = csio; 2263 2264 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2265 csio->ccb_h.sim_priv.entries[0].field = bus; 2266 2267 /* build the packet for the controller */ 2268 ss = &mc->mc_packet->scsi_small; 2269 ss->opcode = MDACMD_SCSI; 2270 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2271 ss->command_control.disable_disconnect = 1; 2272 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2273 ss->command_control.data_direction = MLY_CCB_WRITE; 2274 ss->data_size = csio->dxfer_len; 2275 ss->addr.phys.lun = csio->ccb_h.target_lun; 2276 ss->addr.phys.target = csio->ccb_h.target_id; 2277 ss->addr.phys.channel = bus; 2278 if (csio->ccb_h.timeout < (60 * 1000)) { 2279 ss->timeout.value = csio->ccb_h.timeout / 1000; 2280 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2281 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2282 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2283 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2284 } else { 2285 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2286 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2287 } 2288 ss->maximum_sense_size = csio->sense_len; 2289 ss->cdb_length = csio->cdb_len; 2290 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2291 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2292 } else { 2293 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2294 } 2295 2296 /* give the command to the controller */ 2297 if ((error = mly_start(mc))) { 2298 s = splcam(); 2299 xpt_freeze_simq(sim, 1); 2300 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2301 sc->mly_qfrzn_cnt++; 2302 splx(s); 2303 return(error); 2304 } 2305 2306 return(0); 2307 } 2308 2309 /******************************************************************************** 2310 * Check for possibly-completed commands. 2311 */ 2312 static void 2313 mly_cam_poll(struct cam_sim *sim) 2314 { 2315 struct mly_softc *sc = cam_sim_softc(sim); 2316 2317 debug_called(2); 2318 2319 mly_done(sc); 2320 } 2321 2322 /******************************************************************************** 2323 * Handle completion of a command - pass results back through the CCB 2324 */ 2325 static void 2326 mly_cam_complete(struct mly_command *mc) 2327 { 2328 struct mly_softc *sc = mc->mc_sc; 2329 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2330 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2331 struct mly_btl *btl; 2332 u_int8_t cmd; 2333 int bus, target; 2334 int s; 2335 2336 debug_called(2); 2337 2338 csio->scsi_status = mc->mc_status; 2339 switch(mc->mc_status) { 2340 case SCSI_STATUS_OK: 2341 /* 2342 * In order to report logical device type and status, we overwrite 2343 * the result of the INQUIRY command to logical devices. 2344 */ 2345 bus = csio->ccb_h.sim_priv.entries[0].field; 2346 target = csio->ccb_h.target_id; 2347 /* XXX validate bus/target? */ 2348 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2349 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2350 cmd = *csio->cdb_io.cdb_ptr; 2351 } else { 2352 cmd = csio->cdb_io.cdb_bytes[0]; 2353 } 2354 if (cmd == INQUIRY) { 2355 btl = &sc->mly_btl[bus][target]; 2356 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2357 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2358 padstr(inq->revision, "", 4); 2359 } 2360 } 2361 2362 debug(2, "SCSI_STATUS_OK"); 2363 csio->ccb_h.status = CAM_REQ_CMP; 2364 break; 2365 2366 case SCSI_STATUS_CHECK_COND: 2367 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2368 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2369 bzero(&csio->sense_data, SSD_FULL_SIZE); 2370 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2371 csio->sense_len = mc->mc_sense; 2372 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2373 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2374 break; 2375 2376 case SCSI_STATUS_BUSY: 2377 debug(1, "SCSI_STATUS_BUSY"); 2378 csio->ccb_h.status = CAM_SCSI_BUSY; 2379 break; 2380 2381 default: 2382 debug(1, "unknown status 0x%x", csio->scsi_status); 2383 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2384 break; 2385 } 2386 2387 s = splcam(); 2388 if (sc->mly_qfrzn_cnt) { 2389 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2390 sc->mly_qfrzn_cnt--; 2391 } 2392 splx(s); 2393 2394 xpt_done((union ccb *)csio); 2395 mly_release_command(mc); 2396 } 2397 2398 /******************************************************************************** 2399 * Find a peripheral attahed at (bus),(target) 2400 */ 2401 static struct cam_periph * 2402 mly_find_periph(struct mly_softc *sc, int bus, int target) 2403 { 2404 struct cam_periph *periph; 2405 struct cam_path *path; 2406 int status; 2407 2408 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2409 if (status == CAM_REQ_CMP) { 2410 periph = cam_periph_find(path, NULL); 2411 xpt_free_path(path); 2412 } else { 2413 periph = NULL; 2414 } 2415 return(periph); 2416 } 2417 2418 /******************************************************************************** 2419 * Name the device at (bus)(target) 2420 */ 2421 static int 2422 mly_name_device(struct mly_softc *sc, int bus, int target) 2423 { 2424 struct cam_periph *periph; 2425 2426 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2427 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2428 return(0); 2429 } 2430 sc->mly_btl[bus][target].mb_name[0] = 0; 2431 return(ENOENT); 2432 } 2433 2434 /******************************************************************************** 2435 ******************************************************************************** 2436 Hardware Control 2437 ******************************************************************************** 2438 ********************************************************************************/ 2439 2440 /******************************************************************************** 2441 * Handshake with the firmware while the card is being initialised. 2442 */ 2443 static int 2444 mly_fwhandshake(struct mly_softc *sc) 2445 { 2446 u_int8_t error, param0, param1; 2447 int spinup = 0; 2448 2449 debug_called(1); 2450 2451 /* set HM_STSACK and let the firmware initialise */ 2452 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2453 DELAY(1000); /* too short? */ 2454 2455 /* if HM_STSACK is still true, the controller is initialising */ 2456 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2457 return(0); 2458 mly_printf(sc, "controller initialisation started\n"); 2459 2460 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2461 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2462 /* check for a message */ 2463 if (MLY_ERROR_VALID(sc)) { 2464 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2465 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2466 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2467 2468 switch(error) { 2469 case MLY_MSG_SPINUP: 2470 if (!spinup) { 2471 mly_printf(sc, "drive spinup in progress\n"); 2472 spinup = 1; /* only print this once (should print drive being spun?) */ 2473 } 2474 break; 2475 case MLY_MSG_RACE_RECOVERY_FAIL: 2476 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2477 break; 2478 case MLY_MSG_RACE_IN_PROGRESS: 2479 mly_printf(sc, "mirror race recovery in progress\n"); 2480 break; 2481 case MLY_MSG_RACE_ON_CRITICAL: 2482 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2483 break; 2484 case MLY_MSG_PARITY_ERROR: 2485 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2486 return(ENXIO); 2487 default: 2488 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2489 } 2490 } 2491 } 2492 return(0); 2493 } 2494 2495 /******************************************************************************** 2496 ******************************************************************************** 2497 Debugging and Diagnostics 2498 ******************************************************************************** 2499 ********************************************************************************/ 2500 2501 /******************************************************************************** 2502 * Print some information about the controller. 2503 */ 2504 static void 2505 mly_describe_controller(struct mly_softc *sc) 2506 { 2507 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2508 2509 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2510 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2511 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2512 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2513 mi->memory_size); 2514 2515 if (bootverbose) { 2516 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2517 mly_describe_code(mly_table_oemname, mi->oem_information), 2518 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2519 mi->interface_speed, mi->interface_width, mi->interface_name); 2520 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2521 mi->memory_size, mi->memory_speed, mi->memory_width, 2522 mly_describe_code(mly_table_memorytype, mi->memory_type), 2523 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2524 mi->cache_size); 2525 mly_printf(sc, "CPU: %s @ %dMHZ\n", 2526 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2527 if (mi->l2cache_size != 0) 2528 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2529 if (mi->exmemory_size != 0) 2530 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2531 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2532 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2533 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2534 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2535 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2536 mi->maximum_block_count, mi->maximum_sg_entries); 2537 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2538 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2539 mly_printf(sc, "physical devices present %d\n", 2540 mi->physical_devices_present); 2541 mly_printf(sc, "physical disks present/offline %d/%d\n", 2542 mi->physical_disks_present, mi->physical_disks_offline); 2543 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2544 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2545 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2546 mi->virtual_channels_possible); 2547 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2548 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2549 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2550 } 2551 } 2552 2553 #ifdef MLY_DEBUG 2554 /******************************************************************************** 2555 * Print some controller state 2556 */ 2557 static void 2558 mly_printstate(struct mly_softc *sc) 2559 { 2560 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2561 MLY_GET_REG(sc, sc->mly_idbr), 2562 MLY_GET_REG(sc, sc->mly_odbr), 2563 MLY_GET_REG(sc, sc->mly_error_status), 2564 sc->mly_idbr, 2565 sc->mly_odbr, 2566 sc->mly_error_status); 2567 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2568 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2569 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2570 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2571 MLY_GET_REG(sc, sc->mly_command_mailbox), 2572 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2573 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2574 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2575 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2576 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2577 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2578 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2579 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2580 MLY_GET_REG(sc, sc->mly_status_mailbox), 2581 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2582 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2583 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2584 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2585 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2586 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2587 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2588 mly_printf(sc, " %04x %08x\n", 2589 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2590 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2591 } 2592 2593 struct mly_softc *mly_softc0 = NULL; 2594 void 2595 mly_printstate0(void) 2596 { 2597 if (mly_softc0 != NULL) 2598 mly_printstate(mly_softc0); 2599 } 2600 2601 /******************************************************************************** 2602 * Print a command 2603 */ 2604 static void 2605 mly_print_command(struct mly_command *mc) 2606 { 2607 struct mly_softc *sc = mc->mc_sc; 2608 2609 mly_printf(sc, "COMMAND @ %p\n", mc); 2610 mly_printf(sc, " slot %d\n", mc->mc_slot); 2611 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2612 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2613 mly_printf(sc, " resid %d\n", mc->mc_resid); 2614 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2615 if (mc->mc_packet != NULL) 2616 mly_print_packet(mc); 2617 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2618 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2619 mly_printf(sc, " complete %p\n", mc->mc_complete); 2620 mly_printf(sc, " private %p\n", mc->mc_private); 2621 } 2622 2623 /******************************************************************************** 2624 * Print a command packet 2625 */ 2626 static void 2627 mly_print_packet(struct mly_command *mc) 2628 { 2629 struct mly_softc *sc = mc->mc_sc; 2630 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2631 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2632 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2633 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2634 int transfer; 2635 2636 mly_printf(sc, " command_id %d\n", ge->command_id); 2637 mly_printf(sc, " opcode %d\n", ge->opcode); 2638 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2639 ge->command_control.force_unit_access, 2640 ge->command_control.disable_page_out, 2641 ge->command_control.extended_sg_table, 2642 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2643 ge->command_control.no_auto_sense, 2644 ge->command_control.disable_disconnect); 2645 mly_printf(sc, " data_size %d\n", ge->data_size); 2646 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2647 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2648 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2649 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2650 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2651 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2652 mly_printf(sc, " timeout %d %s\n", 2653 ge->timeout.value, 2654 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2655 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2656 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2657 switch(ge->opcode) { 2658 case MDACMD_SCSIPT: 2659 case MDACMD_SCSI: 2660 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2661 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2662 transfer = 1; 2663 break; 2664 case MDACMD_SCSILC: 2665 case MDACMD_SCSILCPT: 2666 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2667 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2668 transfer = 1; 2669 break; 2670 case MDACMD_IOCTL: 2671 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2672 switch(io->sub_ioctl) { 2673 case MDACIOCTL_SETMEMORYMAILBOX: 2674 mly_printf(sc, " health_buffer_size %d\n", 2675 io->param.setmemorymailbox.health_buffer_size); 2676 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2677 io->param.setmemorymailbox.health_buffer_physaddr); 2678 mly_printf(sc, " command_mailbox 0x%llx\n", 2679 io->param.setmemorymailbox.command_mailbox_physaddr); 2680 mly_printf(sc, " status_mailbox 0x%llx\n", 2681 io->param.setmemorymailbox.status_mailbox_physaddr); 2682 transfer = 0; 2683 break; 2684 2685 case MDACIOCTL_SETREALTIMECLOCK: 2686 case MDACIOCTL_GETHEALTHSTATUS: 2687 case MDACIOCTL_GETCONTROLLERINFO: 2688 case MDACIOCTL_GETLOGDEVINFOVALID: 2689 case MDACIOCTL_GETPHYSDEVINFOVALID: 2690 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2691 case MDACIOCTL_GETLOGDEVSTATISTICS: 2692 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2693 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2694 case MDACIOCTL_CREATENEWCONF: 2695 case MDACIOCTL_ADDNEWCONF: 2696 case MDACIOCTL_GETDEVCONFINFO: 2697 case MDACIOCTL_GETFREESPACELIST: 2698 case MDACIOCTL_MORE: 2699 case MDACIOCTL_SETPHYSDEVPARAMETER: 2700 case MDACIOCTL_GETPHYSDEVPARAMETER: 2701 case MDACIOCTL_GETLOGDEVPARAMETER: 2702 case MDACIOCTL_SETLOGDEVPARAMETER: 2703 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2704 transfer = 1; 2705 break; 2706 2707 case MDACIOCTL_GETEVENT: 2708 mly_printf(sc, " event %d\n", 2709 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2710 transfer = 1; 2711 break; 2712 2713 case MDACIOCTL_SETRAIDDEVSTATE: 2714 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2715 transfer = 0; 2716 break; 2717 2718 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2719 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2720 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2721 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2722 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2723 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2724 transfer = 0; 2725 break; 2726 2727 case MDACIOCTL_GETGROUPCONFINFO: 2728 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2729 transfer = 1; 2730 break; 2731 2732 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2733 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2734 case MDACIOCTL_STARTDISOCVERY: 2735 case MDACIOCTL_INITPHYSDEVSTART: 2736 case MDACIOCTL_INITPHYSDEVSTOP: 2737 case MDACIOCTL_INITRAIDDEVSTART: 2738 case MDACIOCTL_INITRAIDDEVSTOP: 2739 case MDACIOCTL_REBUILDRAIDDEVSTART: 2740 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2741 case MDACIOCTL_MAKECONSISTENTDATASTART: 2742 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2743 case MDACIOCTL_CONSISTENCYCHECKSTART: 2744 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2745 case MDACIOCTL_RESETDEVICE: 2746 case MDACIOCTL_FLUSHDEVICEDATA: 2747 case MDACIOCTL_PAUSEDEVICE: 2748 case MDACIOCTL_UNPAUSEDEVICE: 2749 case MDACIOCTL_LOCATEDEVICE: 2750 case MDACIOCTL_SETMASTERSLAVEMODE: 2751 case MDACIOCTL_DELETERAIDDEV: 2752 case MDACIOCTL_REPLACEINTERNALDEV: 2753 case MDACIOCTL_CLEARCONF: 2754 case MDACIOCTL_GETCONTROLLERPARAMETER: 2755 case MDACIOCTL_SETCONTRLLERPARAMETER: 2756 case MDACIOCTL_CLEARCONFSUSPMODE: 2757 case MDACIOCTL_STOREIMAGE: 2758 case MDACIOCTL_READIMAGE: 2759 case MDACIOCTL_FLASHIMAGES: 2760 case MDACIOCTL_RENAMERAIDDEV: 2761 default: /* no idea what to print */ 2762 transfer = 0; 2763 break; 2764 } 2765 break; 2766 2767 case MDACMD_IOCTLCHECK: 2768 case MDACMD_MEMCOPY: 2769 default: 2770 transfer = 0; 2771 break; /* print nothing */ 2772 } 2773 if (transfer) { 2774 if (ge->command_control.extended_sg_table) { 2775 mly_printf(sc, " sg table 0x%llx/%d\n", 2776 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2777 } else { 2778 mly_printf(sc, " 0000 0x%llx/%lld\n", 2779 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2780 mly_printf(sc, " 0001 0x%llx/%lld\n", 2781 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2782 } 2783 } 2784 } 2785 2786 /******************************************************************************** 2787 * Panic in a slightly informative fashion 2788 */ 2789 static void 2790 mly_panic(struct mly_softc *sc, char *reason) 2791 { 2792 mly_printstate(sc); 2793 panic(reason); 2794 } 2795 2796 /******************************************************************************** 2797 * Print queue statistics, callable from DDB. 2798 */ 2799 void 2800 mly_print_controller(int controller) 2801 { 2802 struct mly_softc *sc; 2803 2804 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2805 printf("mly: controller %d invalid\n", controller); 2806 } else { 2807 device_printf(sc->mly_dev, "queue curr max\n"); 2808 device_printf(sc->mly_dev, "free %04d/%04d\n", 2809 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2810 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2811 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2812 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2813 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2814 } 2815 } 2816 #endif 2817 2818 2819 /******************************************************************************** 2820 ******************************************************************************** 2821 Control device interface 2822 ******************************************************************************** 2823 ********************************************************************************/ 2824 2825 /******************************************************************************** 2826 * Accept an open operation on the control device. 2827 */ 2828 static int 2829 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td) 2830 { 2831 int unit = minor(dev); 2832 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2833 2834 sc->mly_state |= MLY_STATE_OPEN; 2835 return(0); 2836 } 2837 2838 /******************************************************************************** 2839 * Accept the last close on the control device. 2840 */ 2841 static int 2842 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td) 2843 { 2844 int unit = minor(dev); 2845 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2846 2847 sc->mly_state &= ~MLY_STATE_OPEN; 2848 return (0); 2849 } 2850 2851 /******************************************************************************** 2852 * Handle controller-specific control operations. 2853 */ 2854 static int 2855 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 2856 int32_t flag, struct thread *td) 2857 { 2858 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2859 struct mly_user_command *uc = (struct mly_user_command *)addr; 2860 struct mly_user_health *uh = (struct mly_user_health *)addr; 2861 2862 switch(cmd) { 2863 case MLYIO_COMMAND: 2864 return(mly_user_command(sc, uc)); 2865 case MLYIO_HEALTH: 2866 return(mly_user_health(sc, uh)); 2867 default: 2868 return(ENOIOCTL); 2869 } 2870 } 2871 2872 /******************************************************************************** 2873 * Execute a command passed in from userspace. 2874 * 2875 * The control structure contains the actual command for the controller, as well 2876 * as the user-space data pointer and data size, and an optional sense buffer 2877 * size/pointer. On completion, the data size is adjusted to the command 2878 * residual, and the sense buffer size to the size of the returned sense data. 2879 * 2880 */ 2881 static int 2882 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2883 { 2884 struct mly_command *mc; 2885 int error, s; 2886 2887 /* allocate a command */ 2888 if (mly_alloc_command(sc, &mc)) { 2889 error = ENOMEM; 2890 goto out; /* XXX Linux version will wait for a command */ 2891 } 2892 2893 /* handle data size/direction */ 2894 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2895 if (mc->mc_length > 0) { 2896 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 2897 error = ENOMEM; 2898 goto out; 2899 } 2900 } 2901 if (uc->DataTransferLength > 0) { 2902 mc->mc_flags |= MLY_CMD_DATAIN; 2903 bzero(mc->mc_data, mc->mc_length); 2904 } 2905 if (uc->DataTransferLength < 0) { 2906 mc->mc_flags |= MLY_CMD_DATAOUT; 2907 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2908 goto out; 2909 } 2910 2911 /* copy the controller command */ 2912 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2913 2914 /* clear command completion handler so that we get woken up */ 2915 mc->mc_complete = NULL; 2916 2917 /* execute the command */ 2918 if ((error = mly_start(mc)) != 0) 2919 goto out; 2920 s = splcam(); 2921 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2922 tsleep(mc, PRIBIO, "mlyioctl", 0); 2923 splx(s); 2924 2925 /* return the data to userspace */ 2926 if (uc->DataTransferLength > 0) 2927 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2928 goto out; 2929 2930 /* return the sense buffer to userspace */ 2931 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2932 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2933 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2934 goto out; 2935 } 2936 2937 /* return command results to userspace (caller will copy out) */ 2938 uc->DataTransferLength = mc->mc_resid; 2939 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2940 uc->CommandStatus = mc->mc_status; 2941 error = 0; 2942 2943 out: 2944 if (mc->mc_data != NULL) 2945 free(mc->mc_data, M_DEVBUF); 2946 if (mc != NULL) 2947 mly_release_command(mc); 2948 return(error); 2949 } 2950 2951 /******************************************************************************** 2952 * Return health status to userspace. If the health change index in the user 2953 * structure does not match that currently exported by the controller, we 2954 * return the current status immediately. Otherwise, we block until either 2955 * interrupted or new status is delivered. 2956 */ 2957 static int 2958 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2959 { 2960 struct mly_health_status mh; 2961 int error, s; 2962 2963 /* fetch the current health status from userspace */ 2964 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2965 return(error); 2966 2967 /* spin waiting for a status update */ 2968 s = splcam(); 2969 error = EWOULDBLOCK; 2970 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2971 error = tsleep(&sc->mly_event_change, PRIBIO | PCATCH, "mlyhealth", 0); 2972 splx(s); 2973 2974 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2975 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2976 sizeof(uh->HealthStatusBuffer)); 2977 return(error); 2978 } 2979 2980 static int 2981 mly_timeout(struct mly_softc *sc) 2982 { 2983 struct mly_command *mc; 2984 int deadline; 2985 2986 deadline = time_second - MLY_CMD_TIMEOUT; 2987 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2988 if ((mc->mc_timestamp < deadline)) { 2989 device_printf(sc->mly_dev, 2990 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2991 (int)(time_second - mc->mc_timestamp)); 2992 } 2993 } 2994 2995 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz); 2996 2997 return (0); 2998 } 2999